Deep groove ball bearing is one of the most common types of rolling bearing. Basic deep groove ball bearing consists of an outer ring, an inner ring, a set of steel ball and a set of cage. Deep groove ball bearing type has a single row and double row two kinds, deep groove ball structure is sealed and open two kinds of structure, open without sealing structure refers to the bearing, seal type deep groove ball into dust seal and oil seal. Dustproof cover gasket material for sheet metal, only simple prevent dust from entering the bearing raceway. Oil type for the contact seal, can effectively prevent the grease within the bearing.

Single row deep groove ball bearing type code is 6, double row deep groove ball bearings, code-named 4. Its structure is simple, easy to use, is the most common production, the most widely used type of bearings.